./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96a0a61-97c8-4d9c-8299-d374be714253/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96a0a61-97c8-4d9c-8299-d374be714253/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96a0a61-97c8-4d9c-8299-d374be714253/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96a0a61-97c8-4d9c-8299-d374be714253/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96a0a61-97c8-4d9c-8299-d374be714253/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96a0a61-97c8-4d9c-8299-d374be714253/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c06467573d5b161d2e6fae8b3debbeebc37f400272e6a21d533eff435db2aec4 .............................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:55:42,334 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:55:42,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:55:42,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:55:42,388 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:55:42,390 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:55:42,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:55:42,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:55:42,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:55:42,401 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:55:42,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:55:42,403 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:55:42,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:55:42,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:55:42,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:55:42,409 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:55:42,411 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:55:42,412 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:55:42,415 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:55:42,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:55:42,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:55:42,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:55:42,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:55:42,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:55:42,455 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:55:42,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:55:42,456 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:55:42,457 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:55:42,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:55:42,460 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:55:42,462 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:55:42,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:55:42,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:55:42,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:55:42,471 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:55:42,472 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:55:42,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:55:42,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:55:42,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:55:42,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:55:42,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:55:42,477 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96a0a61-97c8-4d9c-8299-d374be714253/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-28 23:55:42,524 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:55:42,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:55:42,525 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:55:42,526 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:55:42,527 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:55:42,527 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:55:42,528 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:55:42,528 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 23:55:42,528 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 23:55:42,528 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 23:55:42,530 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 23:55:42,530 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 23:55:42,531 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 23:55:42,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:55:42,531 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:55:42,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:55:42,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:55:42,532 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 23:55:42,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 23:55:42,532 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 23:55:42,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:55:42,533 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 23:55:42,533 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:55:42,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 23:55:42,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:55:42,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:55:42,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:55:42,536 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:55:42,536 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:55:42,538 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 23:55:42,538 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96a0a61-97c8-4d9c-8299-d374be714253/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96a0a61-97c8-4d9c-8299-d374be714253/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c06467573d5b161d2e6fae8b3debbeebc37f400272e6a21d533eff435db2aec4 [2021-10-28 23:55:42,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:55:42,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:55:42,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:55:42,841 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:55:42,842 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:55:42,844 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96a0a61-97c8-4d9c-8299-d374be714253/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/termination-crafted-lit/ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.c [2021-10-28 23:55:42,936 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96a0a61-97c8-4d9c-8299-d374be714253/bin/uautomizer-GMMbpWq8iD/data/db8a07947/d3803ac02dd749ac9ff3d7feeb45f6d4/FLAG107a9a858 [2021-10-28 23:55:43,365 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:55:43,365 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96a0a61-97c8-4d9c-8299-d374be714253/sv-benchmarks/c/termination-crafted-lit/ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.c [2021-10-28 23:55:43,375 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96a0a61-97c8-4d9c-8299-d374be714253/bin/uautomizer-GMMbpWq8iD/data/db8a07947/d3803ac02dd749ac9ff3d7feeb45f6d4/FLAG107a9a858 [2021-10-28 23:55:43,388 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96a0a61-97c8-4d9c-8299-d374be714253/bin/uautomizer-GMMbpWq8iD/data/db8a07947/d3803ac02dd749ac9ff3d7feeb45f6d4 [2021-10-28 23:55:43,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:55:43,392 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:55:43,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:55:43,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:55:43,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:55:43,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:55:43" (1/1) ... [2021-10-28 23:55:43,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32a8ceb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:43, skipping insertion in model container [2021-10-28 23:55:43,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:55:43" (1/1) ... [2021-10-28 23:55:43,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:55:43,425 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:55:43,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:55:43,609 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:55:43,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:55:43,655 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:55:43,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:43 WrapperNode [2021-10-28 23:55:43,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:55:43,658 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:55:43,658 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:55:43,659 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:55:43,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:43" (1/1) ... [2021-10-28 23:55:43,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:43" (1/1) ... [2021-10-28 23:55:43,705 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:55:43,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:55:43,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:55:43,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:55:43,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:43" (1/1) ... [2021-10-28 23:55:43,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:43" (1/1) ... [2021-10-28 23:55:43,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:43" (1/1) ... [2021-10-28 23:55:43,717 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:43" (1/1) ... [2021-10-28 23:55:43,719 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:43" (1/1) ... [2021-10-28 23:55:43,723 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:43" (1/1) ... [2021-10-28 23:55:43,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:43" (1/1) ... [2021-10-28 23:55:43,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:55:43,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:55:43,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:55:43,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:55:43,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:43" (1/1) ... [2021-10-28 23:55:43,737 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:55:43,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96a0a61-97c8-4d9c-8299-d374be714253/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:43,766 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96a0a61-97c8-4d9c-8299-d374be714253/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:43,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96a0a61-97c8-4d9c-8299-d374be714253/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 23:55:43,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:55:43,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:55:43,985 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:55:43,986 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 23:55:43,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:55:43 BoogieIcfgContainer [2021-10-28 23:55:43,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:55:43,993 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 23:55:43,993 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 23:55:43,996 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 23:55:43,997 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:55:43,997 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 11:55:43" (1/3) ... [2021-10-28 23:55:43,999 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@498922a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:55:43, skipping insertion in model container [2021-10-28 23:55:43,999 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:55:43,999 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:43" (2/3) ... [2021-10-28 23:55:44,000 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@498922a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:55:44, skipping insertion in model container [2021-10-28 23:55:44,000 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:55:44,000 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:55:43" (3/3) ... [2021-10-28 23:55:44,002 INFO L389 chiAutomizerObserver]: Analyzing ICFG ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.c [2021-10-28 23:55:44,060 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 23:55:44,060 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 23:55:44,060 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 23:55:44,060 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 23:55:44,060 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 23:55:44,060 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 23:55:44,061 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 23:55:44,061 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 23:55:44,074 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:55:44,088 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-28 23:55:44,088 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:55:44,088 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:55:44,095 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 23:55:44,096 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-28 23:55:44,096 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 23:55:44,096 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:55:44,097 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-28 23:55:44,097 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:55:44,097 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:55:44,098 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 23:55:44,098 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-28 23:55:44,107 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~k~0, main_~i~0;havoc main_~k~0;havoc main_~i~0;main_~k~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_#t~nondet1;havoc main_#t~nondet1; 4#L18true assume !(main_~k~0 >= 0);main_~i~0 := -1; 8#L23-1true [2021-10-28 23:55:44,107 INFO L793 eck$LassoCheckResult]: Loop: 8#L23-1true assume !!(main_~i~0 >= 0);main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 8#L23-1true [2021-10-28 23:55:44,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:44,113 INFO L85 PathProgramCache]: Analyzing trace with hash 998, now seen corresponding path program 1 times [2021-10-28 23:55:44,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:44,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042493313] [2021-10-28 23:55:44,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:44,125 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:44,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:44,200 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:55:44,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:44,223 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:55:44,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:44,227 INFO L85 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 1 times [2021-10-28 23:55:44,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:44,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671854817] [2021-10-28 23:55:44,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:44,228 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:44,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:44,234 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:55:44,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:44,239 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:55:44,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:44,241 INFO L85 PathProgramCache]: Analyzing trace with hash 30953, now seen corresponding path program 1 times [2021-10-28 23:55:44,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:44,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272024482] [2021-10-28 23:55:44,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:44,243 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:44,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:44,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:55:44,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:55:44,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272024482] [2021-10-28 23:55:44,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272024482] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:55:44,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:55:44,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:55:44,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369494601] [2021-10-28 23:55:44,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:55:44,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:55:44,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:55:44,397 INFO L87 Difference]: Start difference. First operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:55:44,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:55:44,416 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2021-10-28 23:55:44,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:55:44,419 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 9 transitions. [2021-10-28 23:55:44,420 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-28 23:55:44,423 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 3 states and 3 transitions. [2021-10-28 23:55:44,424 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2021-10-28 23:55:44,424 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2021-10-28 23:55:44,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3 transitions. [2021-10-28 23:55:44,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:55:44,425 INFO L681 BuchiCegarLoop]: Abstraction has 3 states and 3 transitions. [2021-10-28 23:55:44,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3 states and 3 transitions. [2021-10-28 23:55:44,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3 to 3. [2021-10-28 23:55:44,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:55:44,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3 transitions. [2021-10-28 23:55:44,450 INFO L704 BuchiCegarLoop]: Abstraction has 3 states and 3 transitions. [2021-10-28 23:55:44,450 INFO L587 BuchiCegarLoop]: Abstraction has 3 states and 3 transitions. [2021-10-28 23:55:44,450 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 23:55:44,451 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states and 3 transitions. [2021-10-28 23:55:44,451 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-28 23:55:44,451 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:55:44,451 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:55:44,452 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 23:55:44,452 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-28 23:55:44,452 INFO L791 eck$LassoCheckResult]: Stem: 28#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~k~0, main_~i~0;havoc main_~k~0;havoc main_~i~0;main_~k~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_#t~nondet1;havoc main_#t~nondet1; 26#L18 assume main_~k~0 >= 0; 27#L23-1 [2021-10-28 23:55:44,452 INFO L793 eck$LassoCheckResult]: Loop: 27#L23-1 assume !!(main_~i~0 >= 0);main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 27#L23-1 [2021-10-28 23:55:44,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:44,453 INFO L85 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2021-10-28 23:55:44,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:44,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326391810] [2021-10-28 23:55:44,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:44,454 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:44,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:44,460 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:55:44,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:44,465 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:55:44,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:44,466 INFO L85 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 2 times [2021-10-28 23:55:44,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:44,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454214160] [2021-10-28 23:55:44,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:44,467 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:44,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:44,488 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:55:44,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:44,492 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:55:44,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:44,493 INFO L85 PathProgramCache]: Analyzing trace with hash 30891, now seen corresponding path program 1 times [2021-10-28 23:55:44,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:44,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908704992] [2021-10-28 23:55:44,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:44,494 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:44,500 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:55:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:55:44,518 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:55:44,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 11:55:44 BoogieIcfgContainer [2021-10-28 23:55:44,628 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 23:55:44,628 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:55:44,629 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:55:44,629 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:55:44,629 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:55:43" (3/4) ... [2021-10-28 23:55:44,632 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 23:55:44,664 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96a0a61-97c8-4d9c-8299-d374be714253/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:55:44,664 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:55:44,666 INFO L168 Benchmark]: Toolchain (without parser) took 1272.85 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 60.8 MB in the beginning and 96.3 MB in the end (delta: -35.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:55:44,667 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 96.5 MB. Free memory was 69.0 MB in the beginning and 69.0 MB in the end (delta: 32.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:55:44,668 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.93 ms. Allocated memory is still 96.5 MB. Free memory was 60.6 MB in the beginning and 72.6 MB in the end (delta: -12.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:55:44,682 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.90 ms. Allocated memory is still 96.5 MB. Free memory was 72.6 MB in the beginning and 71.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:55:44,683 INFO L168 Benchmark]: Boogie Preprocessor took 20.12 ms. Allocated memory is still 96.5 MB. Free memory was 71.3 MB in the beginning and 70.5 MB in the end (delta: 781.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:55:44,683 INFO L168 Benchmark]: RCFGBuilder took 263.70 ms. Allocated memory is still 96.5 MB. Free memory was 70.5 MB in the beginning and 62.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:55:44,684 INFO L168 Benchmark]: BuchiAutomizer took 635.17 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 62.6 MB in the beginning and 98.0 MB in the end (delta: -35.4 MB). Peak memory consumption was 31.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:55:44,685 INFO L168 Benchmark]: Witness Printer took 35.86 ms. Allocated memory is still 121.6 MB. Free memory was 97.9 MB in the beginning and 96.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:55:44,689 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 96.5 MB. Free memory was 69.0 MB in the beginning and 69.0 MB in the end (delta: 32.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 262.93 ms. Allocated memory is still 96.5 MB. Free memory was 60.6 MB in the beginning and 72.6 MB in the end (delta: -12.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.90 ms. Allocated memory is still 96.5 MB. Free memory was 72.6 MB in the beginning and 71.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.12 ms. Allocated memory is still 96.5 MB. Free memory was 71.3 MB in the beginning and 70.5 MB in the end (delta: 781.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 263.70 ms. Allocated memory is still 96.5 MB. Free memory was 70.5 MB in the beginning and 62.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 635.17 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 62.6 MB in the beginning and 98.0 MB in the end (delta: -35.4 MB). Peak memory consumption was 31.3 MB. Max. memory is 16.1 GB. * Witness Printer took 35.86 ms. Allocated memory is still 121.6 MB. Free memory was 97.9 MB in the beginning and 96.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (1 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.1 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.5s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 3 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 8 SDtfs, 0 SDslu, 3 SDs, 0 SdLazy, 4 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 23]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2339b976=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4865b0c0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1ad3fc63=0, i=0, k=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 14]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L15] int k, i; [L16] k = __VERIFIER_nondet_int() [L17] i = __VERIFIER_nondet_int() [L18] COND TRUE k >= 0 Loop: [L23] COND TRUE i >= 0 [L24] i = __VERIFIER_nondet_int() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-28 23:55:44,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96a0a61-97c8-4d9c-8299-d374be714253/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...